Process of producing oxygen.



PATENTED DEC. 24, 1907.

'A. JANET.

PROCESS OF PRODUGING OXYGEN.

APPLICATION FILED MAY 14, 1904.

p j I z Armand dear 1 5 A-RMAND JANET, OFIPARI'S, FRANGE.

PROCESS OF PRODUCING OXYGEN.

To all whom it may concern:

Be it known that I, ARMAND JANET, a citizen of the French Republic, andresident at Paris, France, (and whose postal-office address is 282 RueSt. Jacques, Paris, -France,) have invented new andv useful Improvementsin Processes of Producing Oxygen, of

which the following is a specification.

Oxygen gas is obtained when certain salts such as chlorates, iodates,bromates, perchlorates etc., which contain a large amount of oxygen, aresubmitted to the action of heat. These same salts mixed'wit'hcombustible elements such as coal sawdust, pe-z troleum residues etc.maintain the combus tion' of the latter in a very active. manner, evenin a closed vessel, as soon as the mixture has been lighted. If now weconsider a mixture containing much more oxygenated saltthan is necessaryfor producing the perfect combustion of a certain proportion ofcombustible material, a double phenomenon will take lace. ,First. Thecombustible substance W'lll be entirelyburned with the aid of theoxygen'yielded by a corresponding roportion of the oxygenated salt.Second.

he heat developed by this combustion will cause the decomposition oftheremainder of the oxygenated salt, the oxygen of which is thus setfree. If-now the mixture .is introduced into a vessel which may beclosed again at the moment of lighting, the oxygen has will accumulatein this vessel under a pressure depending upon'the quantity of this. gasand the volume of the vessel.

In order for this process to be practical, it

is necessary that the combustion of the abovedefined mixture have noexplosive character at all; this result is obtained by adding to thismixture a suflicient quantity of an inert substance, such as finelypowdered bricks,

I fine sand, clay, infusorial earth and the like.

' The mixture thus .obtained may be advan-- tageously molded into blockshaving regular shapes and dimensions, each of which would be able to setfree a determined quantity of oxygen. It is easy to 'urify this Qoxygenby se arating it from t e gaseous products (car onic acid, water, etc.)of the reaction. In order to effect this it will suffice to cause thegas to pass for instance through a layer of lime which may be placedinside the apparatus.

The annexed drawing making a part of this specification showsa verticalaxial section of the apparatus preferably used by me Specification ofLetters Patent.

Application filed May 14,1904. Serial No. 208,111-

Patented Dec. 24, 1907.

in carrying out such process, ina practical manner.

In this drawing a is a receptacle or vessel receiving the blocks'b,manufactured in the above stated manner; 0 is another receptacle orvessel surrounding the vessel a with which it communicates at its upperpart. Both these vessels are closed by a cover (1 when the blocks 6 arelighted. 'lhe purifying lime is placed in vessel 0 which is provided atits lower end with holes e through which the tion of the arrows, the gasthen travels down-.

ward throughthis second vessel 0 to escape through the holes e into theouter vessel f;

the pressure of the gas depending of course upon the volume of theapparatus and the quantity of gas produced.

The comminuted combustible material used to formthe oxygen producingbriquets may be any suitablecarbonaceous material Such as coal, sawdust,petroleum, residues, etc., and these materials are intimately mixed witha relatively large quantity of'a highly chemically active salt or saltscontaming a large amount of oxygen such as chlorates, iodates, bromates,perchlorates and the like, all of which I consider equivalents, and theinert material may be finely powdered brick, sand, clay, infusorialearth,

etc., also equivalents, it being of course self evident that refractoryand not highly chemically active oxygen salts suchas sulfates, nitrates,phosphates, etc., cannot when so treated give the result stated andrequired.

Having now described my invention, I claim:

'1. The hereinbefore described process of producing oxygen whichconsists in commingling ulverized carbonaceous material, a highly cemically active-oxidizing salt and comminuted inert refractory materlal,burning the mixture in a closed vessel and retaining the gas produced ina receiving vessel.

2. The hereinbefore described process of producing oxygen which consistsin commingling a pulverized carbonaceous material, a finely comminutedhighly chemically active oxidizing salt and finely pulverized inertrefractory material, briqueting the mixture and burning the briquets ina closed chamber.

3. The hereinbefore described process of producing oxygen which consistsin commingling mlverized carbonaceous material, pulverize highlychemically active oxidizing salts and finely comminuted inert refractorymaterial, briqueting the mixture, burning the briquetes in a closedchamber and passing the products of combustion through the purifyingmaterials.

4. The hereinbefore described process of producing oxygen which consistsin comminglin finely comminuted carbonaceous inateria pulverized highlychemically active oxidizing salts and finely comminuted inert refractorymaterial, briquetin the mixture, burning the briquets in a closedchamber and passing the products of combustion through a layer of lime.

5. "he hereinbefore described process of producing oxygen, consisting inmixing a relatively small quantityof combustible comrelatively smallquantity of combustlble comminuted carbonaceous material with arelatively'large quantity of potassium perchlorate and finely powderedinert nonc'ombustible material, this mixture being lighted and burned ina closed vessel and removing the carbon dioxidfrom the oxygen soproduced.

In testimony whereof I have hereunto set my hand in presence of twowitnesses.

ARMAND JANET.

Witnesses:

ADOLPHE STURM, HANSON C. (oxn

